Hi there,
This doesn't sound like angina to me.
Angina is a chest discomfort, like a tightness or heaviness, rather than feeling the heart beating fast or hard. What you are describing are palpitations - an awareness of your own heart beat (can be hard, fast, irregular, extra beats, missing beats - palpitations cover a lot of feelings).
If you are concerned I would see your doctor for a routine appointment. He should be able to refer you for a 24 hour ECG monitor for you to wear during your normal daily activities - I would suggest planning something that will excite you and bring on your symptoms on the day you have it on.
Hope this helps xxx